Title:
SCANNING METHOD FOR A LARGE-SIZE SCANNER SYSTEM USING A STITCHING PROCESS
Document Type and Number:
WIPO Patent Application WO/2012/146358
Kind Code:
A3
Abstract:
The invention relates to a scanning method for a large-size scanner system (1) comprising at least two image detection elements (2) that are used for scanning a large-size original (4) to be scanned and are arranged in a cascaded manner so as to have at least one overlapping area (13, 14). Said method, in which the image data in the at least one overlapping area (13, 14) of the image detection elements (2) is combined using a stitching process, said at least one overlapping area (13, 14) being searched for image data within a search region (10), includes the following steps: recognizing (18) the texture within the defined search region (10) of the original (4) to be scanned; assessing the data density in the recognized texture to determine a measure (19) of the texture content; weighting (22) the data density as a function of the measure (19) of the texture content of the recognized texture; detecting (20) congruent image elements within the defined search region (10) of the original (4) to be scanned; for each measured point (16 to 17), determining (24 to 25) a weighted deviation from the weighting (22) derived from the texture and the determined deviation (24 to 25) of each measurement; determining (27, 28) a weighted average of the deviations (29 to 30) from said weighted deviations (24 to 25); and calculating, from said weighted average (27, 28) of the deviation, shift values (29, 30) for correcting the position of the offset image elements such that said image elements are made to be congruent.
Inventors:
KAEMPFLEIN SIMON (DE)
SCHOELPEN BURKHARD (DE)
SCHOELPEN BURKHARD (DE)
Application Number:
PCT/EP2012/001692
Publication Date:
March 28, 2013
Filing Date:
April 19, 2012
Export Citation:
Assignee:
ROTH & WEBER GMBH
KAEMPFLEIN SIMON (DE)
SCHOELPEN BURKHARD (DE)
KAEMPFLEIN SIMON (DE)
SCHOELPEN BURKHARD (DE)
International Classes:
H04N1/387; H04N1/04; H04N1/193
Foreign References:
| US6348981B1 | 2002-02-19 | |||
| US20030138167A1 | 2003-07-24 | |||
| EP1422924A2 | 2004-05-26 | |||
| JP2006067031A | 2006-03-09 |
Attorney, Agent or Firm:
GROSSE, Wolf-Dietrich (Hammerstrasse 3, Siegen, DE)
Download PDF: